Heat Transfer Enhancement in a Heat Exchanger Tube Using Twisted Tapes with Circular and Hexagonal Perforations

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Numerical analysis shows twisted tape inserts improve heat transfer and hydraulic performance in heat exchangers, suggesting optimal designs.

Twisted tape configurations increased heat transfer significantly, with enhancements up to 76.27% for HPTT.
Nusselt number improvements were noted: 62.37% for plain twisted tape, 65.85% for circular-perforated, and 76.27% for hexagonal-perforated tapes.
Increased friction factors were observed alongside heat transfer, ranging from 150.68% to 176.05% across different configurations.
The CPTT achieved the highest performance evaluation criterion of 1.25, indicating a balance between thermal and hydraulic performance.

Bouregueba et al. (2025) studied this question.

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Numerical analysis shows twisted tape inserts improve heat transfer and hydraulic performance in heat exchangers, suggesting optimal designs.